The Proline Prosonic Flow B 200 from Endress+Hauser is an industry-optimized ultrasonic flowmeter for measuring biogas, landfill or digester gas without pressure loss. Technologies previously used in these applications were heavily influenced by moisture that was naturally carried in the stream, but the unit is designed specifically for such wet gases. It is a loop-powered, multivariable device for flow, temperature and methane measurements. It can directly calculate and output energy measurements to aid in the use of biogas as a cost-effective source of renewable energy. It provides process transparency, advanced diagnostic capabilities and a built-in method for traceable verification to ensure quality and compliance. It includes a two-chamber housing and worldwide approvals. It can be used in processes up to 159 psi and 176 degrees F. 888/363-7377; www.us.endress.com.